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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editor: Gregory W. Faris
  • Vol. 2, Iss. 8 — Aug. 10, 2007

Analytical model for quantitative prediction of material contrasts in scattering-type near-field optical microscopy

A. Cvitkovic, N. Ocelic, and R. Hillenbrand  »View Author Affiliations

Optics Express, Vol. 15, Issue 14, pp. 8550-8565 (2007)

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Nanometer-scale mapping of complex optical constants by scattering-type near-field microscopy has been suffering from quantitative discrepancies between the theory and experiments. To resolve this problem, a novel analytical model is presented here. The comparison with experimental data demonstrates that the model quantitatively reproduces approach curves on a Au surface and yields an unprecedented agreement with amplitude and phase spectra recorded on a phonon-polariton resonant SiC sample. The simple closed-form solution derived here should enable the determination of the local complex dielectric function on an unknown sample, thereby identifying its nanoscale chemical composition, crystal structure and conductivity.

© 2007 Optical Society of America

OCIS Codes
(110.3080) Imaging systems : Infrared imaging
(120.5820) Instrumentation, measurement, and metrology : Scattering measurements
(180.5810) Microscopy : Scanning microscopy
(300.6340) Spectroscopy : Spectroscopy, infrared

ToC Category:

Original Manuscript: March 28, 2007
Revised Manuscript: May 6, 2007
Manuscript Accepted: May 10, 2007
Published: June 25, 2007

Virtual Issues
Vol. 2, Iss. 8 Virtual Journal for Biomedical Optics

A. Cvitkovic, N. Ocelic, and R. Hillenbrand, "Analytical model for quantitative prediction of material contrasts in scattering-type near-field optical microscopy," Opt. Express 15, 8550-8565 (2007)

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